PTFE - bronze powder - steel is a widely used three layer self - lubricating bearing material with good anti - friction and anti - wear.
聚四氟乙烯(PTFE) - 铜粉 - 钢背复合材料是一种广泛应用的三层结构自润滑轴承材料,具有良好的减摩耐磨性能.
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Hands rotating big gear, I feel great gear type of self - lubricating bearing wear.
用手转动大齿轮, 感觉大齿轮的自润滑型轴承的磨损程度.
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